Smoking article

Abstract

An insulating material for use in a Heat-Not-Burn (HNB) smoking article is described. The insulating material, which can be arranged to circumscribe a fuel element of the smoking article, comprises a carbon monoxide (CO) catalyst, but does not comprise glass fibre.

1 . A Heat-Not-Burn (HNB) insulator comprising an insulating material, wherein the insulating material includes a carbon monoxide (CO) catalyst and does not include glass fibre, wherein the insulator is configured for use in a HNB smoking article. 
     
     
         2 . The insulator as claimed in  claim 1 , wherein the CO catalyst is at least one of cerium oxide, a metal halide, and/or a precious metal. 
     
     
         3 . The insulator as claimed in  claim 1 , wherein the insulating material comprises at least one of a sol-gel, aerogel, and/or foamed ceramic. 
     
     
         4 . The insulator as claimed in  claim 1 , wherein the insulating material comprises at least 200 mg of the CO catalyst. 
     
     
         5 . (canceled) 
     
     
         6 . A method of making a Heat-Not-Burn (HNB insulator the method comprising incorporating a carbon monoxide (CO) catalyst into an insulating material and configuring the insulating material as a HNB insulator, wherein the insulating material does not include glass fibre. 
     
     
         7 . The method as claimed in  claim 6 , wherein the CO catalyst is incorporated in an active form. 
     
     
         8 . A Heat-Not-Burn (HNB) smoking article comprising a HNB insulator, the HNB insulator including an insulating material, wherein the insulating material includes a carbon monoxide (CO) catalyst and does not include glass fibre. 
     
     
         9 . The HNB smoking article as claimed in  claim 8 , further comprising a combustible heat source, wherein the insulating material circumscribes the combustible heat source. 
     
     
         10 . A method of reducing the amount of CO present in an aerosol produced by a Heat-Not-Burn (HNB) smoking article, the method comprising incorporating an insulating material into a HNB smoking article, the insulating material including a carbon monoxide (CO) catalyst and not including glass fibre. 
     
     
         11 . The method as claimed in  claim 10 , wherein the insulating material is configured such that the CO catalyst is not destroyed during use of the HNB smoking article. 
     
     
         12 . The insulator as claimed in  claim 1 , wherein the insulating material is at least 0.5 mm thick. 
     
     
         13 . The insulator as claimed in  claim 1 , wherein the insulating material is between about 1.5 mm and about 2 mm thick. 
     
     
         14 . The method as claimed in  claim 6 , wherein the incorporation of the CO catalyst into the insulating material occurs during manufacture of the insulating material. 
     
     
         15 . The method as claimed in  claim 14 , wherein the incorporation of the CO catalyst into the insulating material comprises adding the CO catalyst at the start of a mixing process. 
     
     
         16 . The method as claimed in  claim 14 , wherein the incorporation of the CO catalyst into the insulating material comprises adding the CO catalyst during a mixing process. 
     
     
         17 . The method as claimed in  claim 6 , wherein the CO catalyst is co-extruded with the insulating material. 
     
     
         18 . The method as claimed in  claim 6 , wherein the insulating material is manufactured prior to incorporation of the catalyst, and wherein the incorporation of the CO catalyst into the insulating material comprises one of coating, spraying, and immersion of the insulating material with the CO catalyst. 
     
     
         19 . The insulator as claimed in  claim 1 , wherein the insulating material comprises at least 10% CO catalyst. 
     
     
         20 . The insulator as claimed in  claim 1 , wherein, the insulating material comprises multiple layers, and wherein at least one of the layers of insulating material includes the CO catalyst.